Patents by Inventor Michael C. Graves

Michael C. Graves has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: D315832
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: April 2, 1991
    Assignee: Rockford Corporation
    Inventors: George A. Rocheleau, Michael C. Graves, John France